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Par exemple, il permet de préciser la version HTML dans laquelle est écrite une page. Assurez-vous que votre Favicon soit cohérente par rapport à votre image de marque. Search for video producers. This is how much of the video people watch, and the higher the better. Posting content on YouTube also lets your content be discovered when people search YouTube, which is the second biggest search engine in the world, bigger than both Bing and Yahoo. Optimisation is crucial and helps give Google the extra edge in understanding exactly what your video is about.